/// <summary>
/// Reads the node identifier from the module.
/// </summary>
/// <returns>A string containing the node identifier; otherwise null.</returns>
public string GetNodeIdentifier()
{
AtCommandResponse res = Execute(new NodeIdentifierCommand()) as AtCommandResponse;
if (res == null)
{
throw new Exception("Could not execute NodeIdentifier command.");
}
NodeIdentifier ni = NodeIdentifier.Parse(res);
if (ni == null)
{
throw new Exception("Could not parse response as NodeIdentifier.");
}
return(ni.Identifier);
}
private void CheckFrame(short length, ByteReader br)
{
XBeeApiType apiId = (XBeeApiType)br.Peek();
XBeeResponse res = null;
switch (apiId)
{
case XBeeApiType.ZNetExplicitRxIndicator:
res = new ExplicitZigBeeResponse(length, br);
break;
case XBeeApiType.AtCommandResponse:
res = new AtCommandResponse(length, br);
break;
case XBeeApiType.RemoteAtCommandResponse:
res = new RemoteAtResponse(length, br);
break;
case XBeeApiType.ModemStatus:
res = new ModemStatusResponse(length, br);
if (res != null)
{
OnModemStatusChanged((res as ModemStatusResponse).ModemStatus);
}
break;
case XBeeApiType.RxPacket16:
res = new RxResponse16(length, br);
break;
case XBeeApiType.RxPacket64:
res = new RxResponse64(length, br);
break;
case XBeeApiType.TxStatus:
res = new TxStatusResponse(length, br);
break;
case XBeeApiType.NodeIdentificationIndicator:
res = new ZNetNodeIdentificationResponse(length, br);
break;
case XBeeApiType.ZNetRxPacket:
res = new ZNetRxResponse(length, br);
break;
case XBeeApiType.XBeeSensorReadIndicator:
res = new XBeeSensorRead(length, br);
break;
case XBeeApiType.ZNetIODataSampleRxIndicator:
res = new ZNetRxIoSampleResponse(length, br);
break;
case XBeeApiType.ZNetTxStatus:
res = new ZNetTxStatusResponse(length, br);
break;
default:
break;
}
if (res != null)
{
if (_waitResponse && res is XBeeResponse)
{
if (res is AtCommandResponse && (res as AtCommandResponse).FrameID != _frameID)
{
return;
}
_receivedPacket = res;
_waitResponse = false;
}
else
{
OnFrameReceived(res);
}
}
}
/// <summary>
/// Opens the connection to the XBee module
/// </summary>
/// <returns></returns>
public bool Open()
{
try
{
if (_serialPort == null)
{
_serialPort = new SerialPort(_port, _baudRate);
}
if (!_serialPort.IsOpen)
{
_serialPort.ReadTimeout = 2000;
_serialPort.WriteTimeout = 2000;
_serialPort.Open();
}
}
catch (Exception ex)
{
OnLogEvent(LogEventType.ServerException, ex.ToString());
return(false);
}
if (_apiType == ApiType.Unknown)
{
#region Detecting API or transparent AT mode
try
{
WriteCommand("+++");
Thread.Sleep(1025); // at least one second to wait for OK response
if (ReadResponse() == "OK")
{
_apiType = ApiType.Disabled;
// we need some msecs to wait before calling another EnterCommandMode
Thread.Sleep(1000);
}
}
catch (Exception)
{
// seems that we are using API
_thd = new Thread(new ThreadStart(this.ReceiveData));
#if (!MF)
_thd.Name = "Receive Data Thread";
_thd.IsBackground = true;
#endif
_thd.Start();
AtCommandResponse at = Execute(new ApiEnableCommand()) as AtCommandResponse;
_apiType = ApiEnable.Parse(at).ApiType;
}
#endregion
}
else if (_apiType == ApiType.Enabled || _apiType == ApiType.EnabledWithEscaped)
{
_thd = new Thread(new ThreadStart(this.ReceiveData));
#if (!MF)
_thd.Name = "Receive Data Thread";
_thd.IsBackground = true;
#endif
_thd.Start();
}
if (_apiType == ApiType.Unknown)
{
throw new NotSupportedException("The API type could not be read or is configured wrong.");
}
return(true);
}